UHV DC protection field test method, device and system based on full process operation characteristic simulation

A UHV DC and on-site testing technology, which is applied in the direction of measuring devices, measuring electricity, and measuring electrical variables, etc., can solve the unfavorable safe and stable operation of UHV DC transmission projects, the inability to simulate the dynamic process of UHV DC transmission projects, and the lack of UHV DC Protection Test Technology and Means and Other Issues

Inactive Publication Date: 2019-01-04
STATE GRID JIANGSU ELECTRIC POWER CO ELECTRIC POWER RES INST +3
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The UHV DC protection system involves a variety of input / output information such as analog sampling input of conventional transformers, digital sampling input of electronic CT, digital input / output, and fast communication with the control system; in addition, the special The fault characteristics of the HVDC transmission project are related to the operation mode of the HVDC project and the response of the control system, which are very complicated
Therefore, the traditional AC relay protection on-site test methods and devices that cannot simulate the dynamic process of UHV DC transmission projects and the rapid communication of control and protection systems cannot realize the effective testing of UHV DC protection functions and performance.
This makes it necessary to rely on the control and protection software to set numbers or modify the fixed value to make the protection operate in the on-site commissioning or operation and maintenance stage of the UHV DC transmission project, so as to check the correctness of the outlet circuit, and lacks effective UHV DC protection test technology and means, which is not conducive to the safe and stable operation of the UHV DC transmission project

Method used

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  • UHV DC protection field test method, device and system based on full process operation characteristic simulation

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Experimental program
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Embodiment 1

[0078] This embodiment provides a test method for an UHV DC protection field test system based on the simulation of the whole process operation characteristics, including:

[0079] S1. Determine the type of fault test according to the protection function type of the protection device under test; and determine the fault-related parameters corresponding to the corresponding fault test type and the simulation signal to be output according to the functional logic of various protection functions of the protection device under test;

[0080]S2. For any type of fault test, the fault-related parameters corresponding to the fault test type are used as the input of the pre-built AC-DC primary circuit model and the equivalent model of the control system, based on the AC-DC primary circuit model and the control system, etc. Carry out fault transient simulation calculations based on the effective model, and obtain the simulation operation data in the fault operation mode corresponding to th...

Embodiment 2

[0096] With the same inventive concept as Embodiment 1, this embodiment is an on-site test device for UHV DC protection based on the simulation of the whole process operation characteristics, including:

[0097] The fault test type and fault parameter configuration module is used to determine the fault test type according to the protection function type of the protection device under test; and to determine the fault-related parameters corresponding to the corresponding fault test type according to the functional logic of various protection functions of the protection device under test And the simulation signal to be output;

[0098] The fault transient simulation calculation module is used for any fault test type, and the fault-related parameters corresponding to the fault test type are used as the input of the pre-built AC-DC primary circuit model and the equivalent model of the control system, based on the AC-DC primary The main circuit model and the equivalent model of the ...

Embodiment 3

[0103] With the same inventive concept as the aforementioned embodiments 1 and 2, this embodiment provides a field test system for UHV DC protection based on the simulation of the whole process operation characteristics, including a network interface, a memory and a processor, wherein:

[0104] The network interface is used to receive and send signals during the process of sending and receiving information with other external network elements;

[0105] memory for storing computer program instructions executable on said processor;

[0106] The processor is configured to execute the steps of the on-site test method for UHV DC protection based on the simulation of the whole process operating characteristics described in Embodiment 1 when running the computer program instructions.

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Abstract

The invention discloses a UHV DC protection field test method, device and system based on full process operation characteristic simulation, and the method comprises the steps: constructing an AC-DC primary loop model of a UHV DC transmission project and a DC control system equivalent model; performing model parameter configuration according to a required operation mode of the UHV DC transmission project; performing protection test configuration according to the functional logic of the tested protection; using a configured model for transient simulation operation calculation to obtain simulation operation data; extracting and processing the simulation operation data, and finally obtaining an AC analog simulation signal, a digital simulation signal, a switching value simulation signal and acontrol bus simulation signal which are outputted to a tested protection device; acquiring the protection exit action information of the tested protection device, and storing the information. The method can guarantee the testing reliability of the UHV DC protection function through the full process operation characteristic simulation of the UHV DC transmission project.

Description

technical field [0001] The invention relates to the technical field of UHV DC protection detection, in particular to an UHV DC protection field test system based on the simulation of the whole process operation characteristics. Background technique [0002] The DC protection system is the safety guard of the UHV DC transmission system. It monitors various operating status parameters of converters, filters and other equipment and areas in real time, and quickly protects all electrical equipment such as converter stations and DC transmission lines from electrical faults. Damage has an important impact on the operation of the entire power system. In recent years, as more and more UHV DC transmission projects have been completed and put into operation, the workload of debugging and operation and maintenance of UHV DC protection systems has become increasingly heavy. [0003] The UHV DC protection system involves a variety of input / output information such as analog sampling inpu...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01R31/00
CPCG01R31/00
Inventor 孔祥平高磊李鹏罗强李娟汤汉松王晨清张弛弓新月
Owner STATE GRID JIANGSU ELECTRIC POWER CO ELECTRIC POWER RES INST
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